GB1005758A - Improvements in and relating to keels or centre-boards for boats - Google Patents

Improvements in and relating to keels or centre-boards for boats

Info

Publication number
GB1005758A
GB1005758A GB3783263A GB3783263A GB1005758A GB 1005758 A GB1005758 A GB 1005758A GB 3783263 A GB3783263 A GB 3783263A GB 3783263 A GB3783263 A GB 3783263A GB 1005758 A GB1005758 A GB 1005758A
Authority
GB
United Kingdom
Prior art keywords
weights
centre
keel
boat
keels
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3783263A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FREDERICK JOSEPH THEAKER
Original Assignee
FREDERICK JOSEPH THEAKER
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FREDERICK JOSEPH THEAKER filed Critical FREDERICK JOSEPH THEAKER
Priority to GB3783263A priority Critical patent/GB1005758A/en
Publication of GB1005758A publication Critical patent/GB1005758A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B41/00—Drop keels, e.g. centre boards or side boards ; Collapsible keels, or the like, e.g. telescopically; Longitudinally split hinged keels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B41/00—Drop keels, e.g. centre boards or side boards ; Collapsible keels, or the like, e.g. telescopically; Longitudinally split hinged keels
    • B63B2041/003—Collapsible keels, or the like, e.g. telescopically; Longitudinally split hinged keels
    • B63B2041/006—Telescopically collapsible keels

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Liquid Deposition Of Substances Of Which Semiconductor Devices Are Composed (AREA)

Abstract

1,005,758. Keels and centre-boards. F. J. THEAKER. Sept. 1, 1964 [Sept. 26, 1963; Feb. 1, 1964], Nos. 37832/63 and 4359/64. Headings B7M, B7S and B7V. A boat having a centre-board ease C with a depending keel structure below it, has weights which can be lowered through the centre-board case to a position in or upon the keel structure so that the latter thus forms a variable ballast keel whose characteristics can be changed from within the boat. In Fig. 1 the keel structure comprises a frame 10 provided with guides 11 a engaged by formations 14 on the weights 12, 12a when the weights are lowered through aperture C<SP>1</SP> in the bottom of the casing on the boat bottoms B. In Fig. 2, the keel is a solid fin 20 with guides or tracks 21 for the weights 22, 22a which are slid down on either side of the fin. The weights may be in sections joined at 22b; Fig. 3 shows a keel frame 30 having a central dividing member 34 for accommodating fore-and-aft weights 31, 31a.
GB3783263A 1963-09-26 1963-09-26 Improvements in and relating to keels or centre-boards for boats Expired GB1005758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3783263A GB1005758A (en) 1963-09-26 1963-09-26 Improvements in and relating to keels or centre-boards for boats

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3783263A GB1005758A (en) 1963-09-26 1963-09-26 Improvements in and relating to keels or centre-boards for boats

Publications (1)

Publication Number Publication Date
GB1005758A true GB1005758A (en) 1965-09-29

Family

ID=10399317

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3783263A Expired GB1005758A (en) 1963-09-26 1963-09-26 Improvements in and relating to keels or centre-boards for boats

Country Status (1)

Country Link
GB (1) GB1005758A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850127A (en) * 1972-01-03 1974-11-26 Richmond Marine Ltd Centreboard casing constructions for sailing boats
FR2730696A1 (en) * 1995-02-17 1996-08-23 Gil Andre Leonce Flat bottomed boat, car ferry, with movable keel
EP0816219A3 (en) * 1996-07-03 1999-06-23 Horst Wolf Watercraft with a raisable keel
US11117642B2 (en) * 2007-03-09 2021-09-14 Magnasail, Llc Apparatus and method to optimize sailing efficiency

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850127A (en) * 1972-01-03 1974-11-26 Richmond Marine Ltd Centreboard casing constructions for sailing boats
FR2730696A1 (en) * 1995-02-17 1996-08-23 Gil Andre Leonce Flat bottomed boat, car ferry, with movable keel
EP0816219A3 (en) * 1996-07-03 1999-06-23 Horst Wolf Watercraft with a raisable keel
US11117642B2 (en) * 2007-03-09 2021-09-14 Magnasail, Llc Apparatus and method to optimize sailing efficiency

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